PolydactylismIn Muscovy Ducks (Cairina moschata): Inheritance And Types Of Polydactyly

Polydactyly is one of the most co mmon congenital limb dysplasia frequently observed in fa rm anima ls and varies e xpressivity. He rein, a preliminary investigation on inheritance types polydactylyin hundred four (104) ducklings produced by seven (7) mating g roups (MGs) different genotypes werereported. These were from non descript random bred population Muscovy ducks Netherlands data generated ana lysed with descriptive (percentage bar chart) infe rential statistics{Chi-square (χ2)}. The resultsindicated that irrespective parents, polydactyl gene (Po) had inco mplete do minance penetrance ducklings; however, frequencies polydactyly was not significantly (P>0.05) d ifferent fro m xpected proportions all M Gs. Fu rther analysis expressivity revealed prevalence bilateral xpression (97.18% ) mpared to unilatera l inc idence (2.82% ).The phenotypic mutant classified into sixteen (16) distinct about one-third (31.82%) exp ressed type 5 polydactyly. In addition, dosage effect Poand twin polyphalangeal(PoTP) genes exerted influence incidence polydactylism types. highest number xpressed progenies homozygous parents. Conversely, PoTPgene antagonistic expression polydactylyand polydactylysim among non-twin polyphalangeal